DSP on MACOSX and iOS4

Question

Hello, I am a beginning electrical engineer(Analog) trying to understand the essence of DSP techniques. Things that interest me right now is filter implementations, FFT analysis on real time audio in general. I recently bought a MAC mini(OSX10.4 snow leopard) and inherited a jail broken iphone from my wife. I thought i could leverage the processing power in both the MAC and the iphone to create apps based on the available audio/DSP/math frameworks. I took a peek in to the various APIs such as Coreaudio,accelerate framework(vDSP) and got intimidated. I dont have any programming experience except for some matlab scripts and am totally new to the MAC paradigm(I used to be a PC). Atleast i know that Objective-C is the programming language of choice for developing on the MAC platform and am prepping myself to learn that. How do i get started on the dsp aspects of audio on the MACOSX and iOS4 platforms? Any thoughts?

thanks

Answer 1

Well first of all you need to read through the apple documentation for the Accelerate Framework if you want to do fast floating point calculations.

For me the CS193p stanford Lecture on iPhone Programming helped a lot to learn about the iOS frameworks and objective-c. Then again I already knew how to program C. Anyway I recently used the vDSP framework to speed up my 3D-Engine and posted some code on my blog, maybe that could help you too.